JPS6235152U

JPS6235152U -

Info

Publication number: JPS6235152U
Application number: JP12653485U
Authority: JP
Priority date: 1985-08-21
Filing date: 1985-08-21
Publication date: 1987-03-02

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の１実施例を示し
、第１図は第２図の―線に沿う矢視図、第２
図は第１図の―線に沿う断面図、第３図は第
１図の―線に沿う部分的断面図である。第４
図及び第５図は従来のオイルフイラーキヤツプの
１例を示し、第４図はＯリングをＯリング溝に嵌
め込む前の状態を示す断面図、第５図はＯリング
をＯリング溝に嵌め込んだ状態を示す部分的断面
図である。第６図は従来の他の例を示す第５図に
対応する部分的断面図である。シール面…１ａ、Ｏリング溝…２、内径側壁面
…２ａ、外径側壁面…２ｂ、突起…４、Ｏリング
…３ 1 to 3 show one embodiment of the present invention, and FIG. 1 is a view taken along the line - in FIG.
The figure is a sectional view taken along the line --- in FIG. 1, and FIG. 3 is a partial sectional view taken along the -- line in FIG. Fourth
5 and 5 show an example of a conventional oil filler cap, FIG. 4 is a sectional view showing the state before the O-ring is fitted into the O-ring groove, and FIG. 5 is a sectional view showing the state before the O-ring is fitted into the O-ring groove. FIG. 3 is a partial cross-sectional view showing a closed state. FIG. 6 is a partial sectional view corresponding to FIG. 5 showing another conventional example. Seal surface...1a, O-ring groove...2, inner wall surface...2a, outer wall surface...2b, protrusion...4, O-ring...3

Claims

[Scope of utility model registration request]

A plurality of protrusions are provided on the outer diameter side wall surface of the annular O-ring groove provided on the sealing surface at equal intervals along the circumferential direction and protrude toward the inner diameter side wall surface, and the protrusions and the inner diameter side wall surface An O-ring holding structure characterized by holding the O-ring in a slightly compressed state.